Stop-motion for textile-machines



J. HIGGINSON. I STOP MOTION FOR TEXTILE MACHINES.

APPLICATION FILED AUG.4. 1911. 1,303,664. Patented May 13,1919.

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J. HIG GINSON.

STOP MOTION FOR TEXTILE MACHINES. APPLICATION H-LED MGM. 1912.

1,303,664. I Patented May 13, 1919.

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ITED STATES PATENT OFFICE.

JAMES Hreenvson, or NEWBEDFORD, MASSACHUSETTS, AssIGNon. or ONE-HALF r0ARCHIBALID s. FULLER, or nnw'ron, MASSACHUSETTS.

STOP-MOTION FOB. TEXTILE-MACHINES.

New Bedford,in the county. of Bristol and State of Massachusetts, haveinvented new and useful Improvements in StopMotions forTGXlZllG'MELChlDGS, of which the follow ing is a specification. d

This invention relates to stop motiondevices for lapping, drawing,doubling or other textile machines treating a fleece orf sliver offibrous materiahand especially to machines of this nature adapted todrawby progressively increasing-speed sets of rollers an attenuated lap,fleece or sliver.

It has heretofore been the practice to provide' nachines of the classindicated with mechanically actuated stop motions com-j prisingpower-release means and a detector device actuated upon breakage orrunning out of the sliver, lap or fleece, prior to its entrance upon thebank of drawingqolls, railway-head, or the like; and for some kinds ofmaterial, it has been possible to actuate the stop motion by breakage ofthe material after it has been drawn, or between the sets ofdrawing-rolls. It has also been proposed to detect in such machines theelevation of one or more of the drawing-rolls due to the Winding of anend or a loop of the sliver, lap or fleece about said roll, whichsometimes occurs when one part of the material under treatment presentsa broken or loose loop, continued operation of the machine when causingbreakage of the machine as well as defective product, but such devicesas last mentioned are not in general use, perhaps because of defects ofconstruction and lack of reliability in operation.

j The present invention provides improved means cooperating with theexisting broken or run-out lap stop-motion devices to occasion stoppageof the wholev machine or of the particular setof drawing-rolls affectedwhenever any part of the material under treatment laps about or is woundupon any of the drawing-rolls forming a part of the existing machine.Objects of the invention are to provide'a wholly reliable device of thischaracter capable of being attached with a minimum of effort, expenseand skill to existing machines, and"toprovide for the sensitiveoperation of the device'"iinmediately upon the beginning of winding uponall or any part of oneor more ofthe rolls Specification of LettersPatent.

Hreernson, a.

Patented May 13, 1919.

Application filed au ust 4, 1917. Serial No. 184,477.

of a brokenpart or loose loop of an attenuatecl sliver or lap. Otherobjects are to provide such a stop motion device enabling the rolls tobe examined, changed, or cleaned readily without removing the stopmotion device.

In the accompanying drawings,

Figure l is a typical section, showing one bank of drawing rolls'of aribbon lap ma chine with the new device in place; Fig. 2 is a similarfragmentary view showing one detector, the connection therefrom, an apart of the power release device when the machine has been stopped bythe occurrence of the fault for which it is desired to stop the machine;

Fig. 3 is a plan, the drawing rolls being removed;

Fig. t is a rear elevation, parts being broken away; and

Fig. 5 is a section on an enlarged scale on line 5-5 of Fig. 3.

Referring to Fig. 1, the ballor wound lap 1 of'material to be drawn issupported as usual on the rolls 2, thesliver or fleece 3 passing overthe table 4 through guides 5, over the respective bottom rolls 7 andunder the respective top rolls 8 of the drawing rolls, as shown. Asusual in the art, bearings 9 for the rolls7, 8, may beopen slots givingupward freedom of movement to both rolls. The respective pairs of rolls7, 8, are driven at progressive speeds, as

jecting through an aperture 15 in the table A. The lever 1a is pivotedon a knife-edge 16 so that the counterbalance weighted balk 17 tends toraise the detector guide 13, except when the guide 13 is depressed bythe weight of the lap or sliver 3.

The balks 17 when permitted to drop are caught between the teeth of arotating spider 19 and frame-member 18 so as to etc the spider 19 andthe spider shaft 20, Figs. 1

and 4. As shown in Fig. 4, the shaft20- may be driven by asgear 21through a cam-faced clutch 22 normally held together by a weighted lever23, adapted when displaced by the stoppage of the shaft 20 to-lift anotched belt-shipper rod 24 from its engagementatj-25 with a member ofthe frame. Rod 24 is provided with a spring, not shown, to shift thebelt. The said br'oken lap'or run-out-lap detector and stopping device13, 20, 24, etc., is typical ofthe old art and forms no part ofthepresent invention except as hereinafter explained.

.In order to adaptsu'ch devices also to stopthe machine whenany'partofthe'material under treatment winds upon any one of the rolls 7 or s,pro ision is'made to lift the existingdete'ct'or'element, as 13. In'theform shown, a connection between'the yokes 10 and detector'1'3 isprovided. This connectionmay comprise 'a'pairof rocker bars 30, 31,preferably pivoted by perforated lugs 32 on a'fixed shaft '33 hung inbearing brackets 34 bolted to the machine frameat 35 and extending undereachbank of drawing-rolls. The rocker bars 30, 31 each carry arms36,which may be integral with the respective frames, and which lie in thevertical plane of the last pair or front drawing-rolls 7, 8, the arms 36restingupon the yokeslO or links 11 so that at least one of the arms 36will be moved by motion; of, the weight yoke 10 at eitheror, both endsof the roll induced by liftinggtheroll 8, which will, occur when thematerial under treatment winds upon any part ofeitherthe roll 7 or theroll 8. The arms36panbe integral becausethe weight yokes 10'for' thefront drawing-rolls can be swung forward to release the rolls of theirWeight, arms 36;;not interferingwith this operation. llherespective bars30, 31, which are preferably rectangular in section, also carry arms 37having slotted bosses 38,'Fig. 4, to take over the respective frames,and having if desired adjustment screws 39, each arm'37 being intherplane of a pair of drawing-rolls so asto rest upon the link 11 orthe weight'yokelO. h

Rigid, and preferably integral, with the barr30 is an arm 40, the bar 31having a similararm- 41. Thesearms as shown in Fig. l eXtendupw-ardly atthe rear of the frame carrying thedrawing-rolls, and are connected. byalinkagehavin'g members-42, 43, pivotedtogether and t0- the respective,-arms -40, 41',

as by ashoulderedpivot screws 44, 45, the.

members '42, 43, having large bosses 46 to prevent the lazyi-tonglinkage40,41, 42, 43 from closing upon itself tootightly. As shown in Figs. 4and 5, the linkage is adjustable to vary; the elevation ofcyokes 10at'whichthe machine :stops, "as by varying the ;position off-the pivotscrews 45; levers 42 an'd 43, for instance, being slotted at 50 toreceive threaded and headed shoulder screws 45 admembers 42, 43,terminate inenlargements 48, which normally stand under the detectorguide 13 as best shown in Figs. 1 and 4.

The'operation will now be apparent. If any of the rolls 7, 8, are woundupon at any part of their length, either or both the bars 30, 31, willbe rocked on the shaft 33, causing the arms 40, 41, to approach eachother, which movement is transformed into elevation of the enlargements48, 48, at agreatly multiplied rate, a slight displacement of eitherframe resulting, by reason of the linkage 40, 41, 42, 43, in a largeupward movementof the detector 13, and prompt stoppage of the machine bythe intervention of the lever 14, balk 17, spider '19 and the devicesactuated thereby. The arms 37 may be liftedfrom the bars 30, 31,whenever'it is necessary to remove 'a top 1'0118, and replaced 'withoutaltering the ustment of screws 39, which are nottightened ontherefs'pectivebars.

WhatI claim is:

1. A stop-motion device for textile machines comprising a breakage orabsent-material detector, a power release device worked thereby, meansfor detecting displacement of 'a roll acting on the material undertreatme1'1t,'anda11 operating connection from said displacementdetecting means to said breakage detector.

2. A stop-motion for textile machines having pairs of drawing-rollscomprising. power release devices and anindependentoonnection betweensaid devices and -the 'ends of one member of each? pair of rolls, saidconnections being linked together whereb to inultiplythe' motion'ateither end of said rolls efi'ective'to operate said power releasedevices.

3. A stop-motion for a machine having drawing-rolls comprisingpowerrelease devices, means for detecting displacenient from normaldpositionof one or more of said rolls, and a connection between said devices andsaid means comprising a plurality of rockerbars, and a linkagebetweensaid bars adapted to actuate said release devices upon movement of oneor more of said bars. I

4. A stop-motion for textile machines having aplurality of rolls,comprising power release devices, means for detecting displacement fromnormal position of any of the rolls acting on the material undertreatment, and a connection between said devices and said meanscomprising a linkage adapted to multiply tolike extentithe.displacementof said displacement detecting means caused by displacement of any ofsaid rolls.

5. A textile Ina-chine stop-motion adapted to be actuated byinaterialunder treatment winding about a bodily movableroll workin gonthesame; havingtherein independent detector means cooperating with eachbearing end of said roll, said means being independently movable bymotion at either end of said roll, and a connection between the detectordevices for the respective ends of said roll adapted to multiply themotion of either detector device, and means operated by said connectionfor releasing the power.

6. A textile machine stop-motion having power release devices, detectormeans for a Wound-upon roll, and a connection between said devices andsaid means comprising a lazy-tong linkage adapted to multiply the motionof displacement of said roll.

7 A textile machine stop-motion comprising displaceable rolls acting onthe material under treatment, power release devices adapted to beactuated by a detector acting on said material, and means adapted to beattached to the machine comprising rockerbars respectively having armsreaching to a part displaceable with said rolls, and a linkage betweensaid bars adapted to actuate said detector upon movement of any or allof said rocker-bars.

8. A textile machine stop-motion comprising displaceable rolls acting onthe material under treatment, power release devices adapted to beactuated by a detector acting on said material, and means adapted to beattached to the machine comprising rockerbars respectively having armsreaching to a part displaceable with said rolls, and an adjustablelinkage between said bars adapted to actuate said detector upon movementof any or all of said arms to a predetermined extent.

Signed by me at Boston, Massachusetts, this 3rd day of July, 1917.

JAMES I-I'IGGINSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

